Window-lock



J. BULANDA.

WINDOW LOCK.

I APPLICATION FILED NOV- 13, 1919- I 1,340,876, 4 Patented May 25, 1920.

3 SHEETS-SHEET 1.

FIG. 1. FIG.

king;

J. BULANDA. WINDOW LOCK.

APPLICAHON FILED NOV-13,1919. 1,340,876, 7 Patented May 25, 1920.

3 SHEETS-SHEET 2.

UNITED STATES PATENT OFFICE.

JOHN BULAHDA, OF PULLMAN, ILLINOIS, ASSIGNOB OF ONE-HALF TO FBANCISZEK BULANDA, 0F PULLMAN, ILLINOIS.

WINDOW-LOCK.

Specification of Letters Patent.

Patented May 25, 1920.

To all whom it may concern.

Be it known that 1, JOHN BULANDA, a

- to permit the shifting of the sash in either direction.

A further object of the invention is to provide a window sash retainer including simultaneously operable bolt and ratchet means whereby the sash is adapted for ratcheting movement in either direction until secured by the bolt when the ratchet automatically assumes a wedged retaining position against the sash.

A still further object of the invention is to provide a sash lock that is easy to install upon a window possessing great strength in holding the sash adjusted and providing the ratchet retaining means for maintaining the sash in adjusted position when the mechanism is released and at which time the sash may be forcibly shifted either upwardly or downwardly.

With these general objects in view, the invention consists of the novel combination and arrangement of parts hereinafter more fully described in connection with the ac companying drawings and in which like reference characters designate corresponding parts throughout the several views.

In the drawings,

Figure 1 is a front elevation of a portion of a window having my invention in stalled thereon,

Fig. 2 is a side elevation of the window frame,

Fig. 3 is a sectional view through the window casing showing the racks upon the sashes,

Fig. 4 is a vertical sectional view through a portion of a window casing and sash illustrating the invention in its locked position,

Fig. 5 is a view' of the inner face of the window casing showing the bolt and latch mechanism,

Fig. 6 is a horizontal sectional view upon the line VIVI of Fig. 4,

are provided Fig. 7 is a view similar to Fig. 4 with the device released,

Fig. 8 is a vertical sectional view taken upon line VIII-VI1I of Fig. 4,

F 9 is a horizontal sectional view taken upon line IXIX of Fig. 4, and

Fig. 10 is a perspective view of the mechanism of the device which is adapted to be carried by the window casing.

Referring more in detail to the drawings, my invention is designed for holding as well as locking vertically shiftable sashes 10 and 11 at pointsof adjustment in the window casing 12. Corresponding sides 13 and 14 of the sashes 10 and 11 respectively with suitable racks 15 having 16 adapted forratchet engagement by the pivoted latch 17 hereinafter described while sockets 18 in the racks 15 are adapted for the seating reception of spring pressed bolts 19 when the sashes are in their closed positions.

A U-shaped frame 20 carried by a plate 21 is secured through the window frame 22 for holding the lock and latch mechanism of identical construction for each of the sashes 13 and 14.; The frames 20 are positioned adjacent each other through the window frame member 22 as illustrated in Fig. 2 of the drawings, a wooden panel 23 being preferably secured overlying the plate 2 An elongated yoke 24 is pivoted at one end to a bracket 25 within the frame 20 with its opposite end normally held outwardly by a leaf spring 26 as well as by a spring pressed catch 27 pivoted in the frame 20 with the free end of the yoke 24 normally resting upon a shoulder 28 of the catch.

The latch 17 is pivoted through the yoke 24 by a pin 29 while leaf springs 30 carried by the yoke normally bear upon the arcuate base 31 of the latch 17 for norholding the latch 17 with the tines forked free end 32 engaging the rack teeth 16. When the yoke 24 is locked in its normal position by the catch 27, the adjacent. window sash may be shifted in one direction permitting the latch 17 to ratchet over the teeth 16 to prevent the oposite movement of the sash by wedging the latch 17 between the yoke 24 and the toothed rack of the sash.

A curved lever 33 pivoted at 34 to the spaced teeth mally of its plate 21 has a finger 35 at one end thereof normally engaging the upper end 36 of the catch 27 which end is shiftably positioned in a slot 37 of said plate 21. A push rod 38 shiftable through the window sash 11 has its inner end positioned in a groove 39 in the adjacent side of the lever 33 while a push button 40 is provided upon the outer end of the rod 38. Inward pressure upon the button 40 rocks the lever 33 releasing the catch 27 from the yoke 24 whereby the forcible shifting of the adjacent sash swings the latch 17 to its opposite extremity of movement which is permitted by the outward swinging of the yoke 24 against the action of the spring 26.

The bolt 19 already referred to is mounted in a housing 41 upon the plate 21 with a spring 42 normally projecting said bolt so as to enter the keeper socket 18 of the adjacent sash rack when the sash is in its closed position as best illustrated in Figs. 4 and 9 of the drawings. A rocker shaft 43 journaled beneath the plate 21 has an arm 44 articulated with the bolt 19 for retracting the same against the action of the spring 42 when the shaft 43 is rocked in one direction by means of a curved arm 45 projecting within the path of movement of the lever Upon forcing the rod 38 inwardly by the push button 40, the arm 45 is engaged by the lever 33 and the shaft 43 rocked causing the arm 44 to retract the bolt 19 simultaneously with the release of the catch 27 from the yoke 24 as heretofore described. The panel 23 has a slot 46 corresponding to the slot 47 in the plate 21 and through which slots the latch 17 is shiftably positioned while an opening 48 in the panel 23 accommodates the bolt housing 41. The complete operation of the invention will be understood from this detail description thereof, it being seen that the complete mechanism is provided for either or both of the sashes 10 and 11as herein set forth and is so positioned as to lock the sash 10 closed when elevated and the sash 11 closed when lowered, the bolts 19 engaging the keeper sockets 18 for this purpose while the latch 17 for each sash retains the same closed after the manner of a wedge by reason of the inability of the yokes 24 to' shift pivotally when the bolts 19 are in their projected positions.

When the bolt 19 is retracted by inwardly pressing the push button 40 thereof, the yoke 24 is resiliently positioned inwardly by its spring 26 with the latch 17 engaging the adjacent rack 15 of the corresponding window sash for ratcheting thereover during either upward or downward movement of the sash, the engagement between the teeth and latch. being maintained by the springs 30. When the sash is elevated with the bolt retracted, the latch 17 is adapted to hold the sash in its adjusted position by means of the spring 26 outwardly positioning the yoke 24 until the sash is shifted with considerable force to pivotally move the yoke 24 as illustrated in Fig. 7 of the drawings. Upon releasing the rod 38, the bolt 19 is automatically projected by its spring 42 for engaging the rack teeth 16 at any adjustment of the sash although a more firm locking of the sash is effected when the sash is closed by the seating of the bolt 19 in the keeper socket 18 of the sash rack.

While the form of the invention herein set forth is believed to be the preferable embodiment thereof, it will be understood that minor changes may be made therein without departing from the spirit and scope of the invention.

What I claim as new is 1. A sash lock comprising a rack upon the sash, a pivoted yoke upon the casing, a swinging latch upon the yoke adapted for ratcheting engagement with the rack, normal positioning means for the yoke, a retaining catch for the yoke when the latch is in its operative position, a curved lever upon the casing adapted for releasing said catch, a shiftable rod normally engaging said lever extending exteriorly of the casing, said rack having keeper sockets therein, a spring pressed bolt carried by the casing adapted for engaging the teeth of the rack and for seating in said sockets when the sash is closed, and an operative arm connected to said bolt extending within the path of travel of said lever whereby the bolt is retracted during the inward movement of the latch operating rod.

2. A sash lockcomprising a rack upon the sash, a swinging yoke upon the casing, a latch for the rack carried by said yoke, means for holding the yoke in one position with the latch operatively engaging the rack, and normally operable means for releasing the yoke holding means to permit the sash and rack to slide free of the latch.

3. A sash lock comprising a rack upon the sash, a swinging yoke upon the casing, a latch for the rackcarried by said yoke, means for holding the yoke in one position with the latch operatively engaging the rack, normally operable means for releasing the yoke holding means to permit the sash and rack to slide free of the latch, and a tensioned sliding bolt adapted to engage the rack to lock the sash in adjusted positions, said bolt being released'from the rack by said manually operable means.

In testimony whereof I aflix my'signature.

JOHN BULANDA, 

